Integrated Rotation Regulating Portion and Sliding Surface in Vehicle Switch
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Solution Overview
Problem
Conventional switch devices for vehicles lack design flexibility due to the separate configuration of rotation stoppers and sliding surfaces, which limits their functionality in compact spaces.
Innovation Solution
A switch device with a rotation mechanism that integrates a rotation regulating portion and rotation sliding surfaces, forming a contact surface orthogonal to the rotation sliding surface, allowing for improved design flexibility in limited spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the rotation stopper and sliding surface are configured separately as in conventional switch devices, then the structure is simple and easy to manufacture, but the design flexibility is insufficient in limited spaces
Solution Approach 1:
The patent merges the rotation stopper and sliding surface into a single integrated component. The rotation stopper includes both the rotation regulating portion (that limits rotational movement) and the sliding surface (that guides axial movement), eliminating the need for separate components. This integration directly resolves the technical contradiction by improving design flexibility in limited spaces while maintaining manufacturing simplicity through a unified structure.
2Area of stationary object
If the rotation stopper and sliding surface are configured separately, then manufacturing is easier, but the arrangement of components in compact spaces is limited
Solution Approach 1:
By combining the rotation stopper and sliding surface into one integrated component, the patent optimizes space utilization in compact arrangements. The rotation stopper with integrated sliding surface can be positioned more efficiently within limited space, allowing better arrangement of other components like the knob member and movable contact members, while still maintaining ease of manufacture through a unified molding or fabrication process.
Solution Approach 2:
The patent utilizes the axial direction (another dimension) by forming the sliding surface on the rotation stopper that extends in the axial direction. This allows the sliding surface to function independently in the axial dimension while the rotation regulating portion functions in the rotational dimension, enabling efficient three-dimensional space utilization without complicating the manufacturing process.
3Adaptability or versatility
If the rotation regulating portion and sliding surface are integrated, then design flexibility is improved, but the manufacturing complexity increases
Solution Approach 1:
The integration of the rotation regulating portion and sliding surface into a single rotation stopper component achieves design flexibility while avoiding manufacturing complexity through unified fabrication. The rotation stopper can be molded or machined as a single piece where the sliding surface is formed as an integral feature, eliminating the need for separate manufacturing and assembly steps for the sliding surface component.
Data Source
Figure 1
Figure 2A~2B
Figure 3~4B
AI summary
A switch device includes a knob member rotatably fitted to and supported by a middle serving as a fixing portion, and a rotor member integrally mounted to the knob member and rotatably supported by the middle. A rotation regulating portion that regulates a rotatable range of the knob member with respect to the middle and rotation sliding surfaces in a rotational axis direction of the middle and the knob member are collectively formed.